Down the ballot: Dems in good shape

From NBC's Mark MurrayEarlier today, we mentioned some numbers from the latest NBC/WSJ poll pointing to a difficult political environment for the GOP heading into November. We should also have mentioned this figure: Democrats hold a 15-point advantage (49%-34%) over Republicans in a generic congressional ballot test.

That is virtually unchanged from March's poll, when respondents picked a generic Democratic candidate over a generic Republican, 49%-34%.